Each mobile phone comes has a limited amount of resources like memory (RAM) and processing power. If you overburden the phone beyond the capacity of these resources, the phone may hang. So, you should try and minimize the number of concurrently running apps. There are a number of apps that run in the background. You can free the clogged memory by stopping the apps that you don’t need at present.

To see the list of currently running apps:

Go to Settings

Apps

Running Apps

Keep All the Apps Updated

Keep visiting the app stores like Google Play (if you have Android phone) and iTunes App Store (if you’ve an iPhone). Mobile app developers keep on improving performance of their apps. Therefore it is highly recommended that you regularly update all the apps as and when a better version is available. Latest versions of apps may be designed to use lesser memory and CPU power.

Shut Down Your Mobile Phone

Shutting down your phone every once in a while is a good idea because it will completely refresh the memory of phone. When you will restart your phone, its memory will be free of all the unnecessary pieces of data that were lingering on and occupying the memory space.

Switch off and Remove Battery

This tip may not have any big effect at all in most cases. But it is also a good idea to remove battery and SIM card after every few months. Removing battery and SIM will clean the dust from the electric touch points.

It is fine to remove mobile battery once in a while. It remove the dust at touch points. It may help in solving phone hang problem.

Install Apps in External Memory (SD Card)

Most of the mobile phone users install all sorts of apps in their phones. When installing the apps, they don’t pay much attention to where the app is going to be installed and what impact it can have on the performance of the phone. In most cases, by default, the apps get installed in the internal memory of the phone. This leaves lesser space for the running the apps and that in turn cause clogged memory. If your phone hangs, it is advisable to install apps in the external memory (i.e. SD Card) of the phone. Usually the external memory is larger than the internal memory. And external memory can also be easily expanded if required (instead of 2 GB card, just insert an 8 GB card!). Therefore, in external memory more apps can be easily installed without clogging the internal memory of the phone. This will save your phone from hanging.

For this you can set the default write disk:

Go to Settings

Storage

Default write disk

Select SD Card

Please note that this setting is available in slightly different location in different mobile handsets. So, you may have to do a bit of look around.

Move Installed Apps from Internal to External Memory

You can always move the already installed apps from internal to external memory. As explained above, this will give more internal memory space for the smooth running of the apps. As a result your phone will not hang.

Setting for moving installed apps is usually available under:

Settings

Apps

Delete Unnecessary Apps

You can also browse through the list of the apps installed in your phone. You might spot a few apps that you had installed once upon a time but you no longer require them. Uninstall such apps immediately. They stay idle in your phone and waste the all important memory space.

Delete Unnecessary Data (like photos, videos, songs)

If you have stored images, videos and songs in the internal memory; you’re really choking up the internal memory space and that could very well become the cause of your phone hanging all the time. Go ahead, take a look at all the pictures, videos and songs and delete the ones that you no longer need. Alternatively, first you can take backup of this data in your computer and then delete it from your phone. Photos, videos and audio take up most of the space the phone of an average smart phone user. And it is one of the common reasons why your phone hangs.

Identify Resource Hogging Apps

Some of the apps use much more memory than other apps. Game apps (like Angry Birds) are among the top memory guzzling apps. You can check how much memory each of your apps are using. For this go to Settings > Apps (or Memory) > Running Apps. Here you will be able to see which app is using exactly how much memory.

If possible, you may try a lighter alternative of an app that is using a lot of memory. For example, if you use a news app and that app is eating up a lot of RAM; you may consider removing that app and install another news app from the app store.

Install Antivirus Software

Viruses are a menace. If your mobile phone is playing host to a virus, the virus can considerably slow down your mobile phone. Needless to say, your phone will hang often. So, obviously you need an anti-virus. Although anti-virus software itself take up a lot of memory but it is better to have the virus removed.

Give External Memory Some Breathing Space

So far, we have been telling you about the importance of installing apps on external memory. But it should not mean that you choke up the external memory as well! Keep some space free in external memory also so that apps can easily store and read their relevant data. If external memory is also full to the brim, that can also become the cause of phone hang.

Use Factory Reset Option

This should be your last resort. If nothing else works and phone stills hangs, you can reset your mobile phone back to factory settings. Use of this option will remove everything from your mobile phone. You will lose everything that would be there in the internal memory. And it will be gone forever. All the messages, contacts, apps, bookmarks, photos, videos, songs, ringtone… everything will be deleted. Essentially, this option will make your phone just the way it was when it was produced in the factory.